#include "csapp.h"

int main()
{
int fd;
char c;

fd=open("foobar.txt",O_RDONLY,0);
if (fork()==0){
read(fd,&c,1);
exit(0);
}
wait(NULL);
read(fd,&c,1);
printf("c = %c\n",c);
exit(0);
}
